NetBSD/gnu/dist/ld/lexsup.c

991 lines
31 KiB
C
Raw Normal View History

1997-09-24 19:39:15 +04:00
/* Parse options for the GNU linker.
Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 1998
Free Software Foundation, Inc.
1997-09-24 19:39:15 +04:00
This file is part of GLD, the Gnu Linker.
GLD is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GLD is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GLD; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
1997-09-24 19:39:15 +04:00
#include "bfd.h"
#include "sysdep.h"
#include "libiberty.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "getopt.h"
#include "bfdlink.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldgram.h"
#include "ldlex.h"
#include "ldfile.h"
#include "ldver.h"
#include "ldemul.h"
#ifndef PATH_SEPARATOR
#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
#define PATH_SEPARATOR ';'
#else
#define PATH_SEPARATOR ':'
#endif
#endif
1997-09-24 19:39:15 +04:00
/* Somewhere above, sys/stat.h got included . . . . */
#if !defined(S_ISDIR) && defined(S_IFDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
/* Omit args to avoid the possibility of clashing with a system header
that might disagree about consts. */
unsigned long strtoul ();
static void set_default_dirlist PARAMS ((char *dirlist_ptr));
static void set_section_start PARAMS ((char *sect, char *valstr));
static void help PARAMS ((void));
/* Non-zero if we are processing a --defsym from the command line. */
int parsing_defsym = 0;
/* Codes used for the long options with no short synonyms. 150 isn't
special; it's just an arbitrary non-ASCII char value. */
#define OPTION_ASSERT 150
#define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
#define OPTION_CREF (OPTION_CALL_SHARED + 1)
#define OPTION_DEFSYM (OPTION_CREF + 1)
#define OPTION_DYNAMIC_LINKER (OPTION_DEFSYM + 1)
#define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
#define OPTION_EL (OPTION_EB + 1)
#define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
#define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
#define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
#define OPTION_IGNORE (OPTION_HELP + 1)
#define OPTION_MAP (OPTION_IGNORE + 1)
#define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1)
#define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
#define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
1997-09-24 19:39:15 +04:00
#define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
#define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
#define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
#define OPTION_RELAX (OPTION_OFORMAT + 1)
#define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
#define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
#define OPTION_RPATH_LINK (OPTION_RPATH + 1)
#define OPTION_SHARED (OPTION_RPATH_LINK + 1)
#define OPTION_SONAME (OPTION_SHARED + 1)
#define OPTION_SORT_COMMON (OPTION_SONAME + 1)
#define OPTION_STATS (OPTION_SORT_COMMON + 1)
#define OPTION_SYMBOLIC (OPTION_STATS + 1)
#define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
#define OPTION_TBSS (OPTION_TASK_LINK + 1)
1997-09-24 19:39:15 +04:00
#define OPTION_TDATA (OPTION_TBSS + 1)
#define OPTION_TTEXT (OPTION_TDATA + 1)
#define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
#define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
#define OPTION_VERBOSE (OPTION_UR + 1)
#define OPTION_VERSION (OPTION_VERBOSE + 1)
#define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
#define OPTION_WARN_COMMON (OPTION_VERSION_SCRIPT + 1)
#define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
#define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1)
#define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
#define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
#define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
#define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
#define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
#define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
#define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
#define OPTION_NO_STD_PATH (OPTION_FORCE_EXE_SUFFIX + 16)
1997-09-24 19:39:15 +04:00
/* The long options. This structure is used for both the option
parsing and the help text. */
struct ld_option
{
/* The long option information. */
struct option opt;
/* The short option with the same meaning ('\0' if none). */
char shortopt;
/* The name of the argument (NULL if none). */
const char *arg;
/* The documentation string. If this is NULL, this is a synonym for
the previous option. */
const char *doc;
enum
{
/* Use one dash before long option name. */
ONE_DASH,
/* Use two dashes before long option name. */
TWO_DASHES,
/* Don't mention this option in --help output. */
NO_HELP
} control;
};
static const struct ld_option ld_options[] =
{
{ {NULL, required_argument, NULL, '\0'},
'a', "KEYWORD", "Shared library control for HP/UX compatibility",
ONE_DASH },
{ {"architecture", required_argument, NULL, 'A'},
'A', "ARCH", "Set architecture" , TWO_DASHES },
{ {"format", required_argument, NULL, 'b'},
'b', "TARGET", "Specify target for following input files", TWO_DASHES },
{ {"mri-script", required_argument, NULL, 'c'},
'c', "FILE", "Read MRI format linker script", TWO_DASHES },
{ {"dc", no_argument, NULL, 'd'},
'd', NULL, "Force common symbols to be defined", ONE_DASH },
{ {"dp", no_argument, NULL, 'd'},
'\0', NULL, NULL, ONE_DASH },
{ {"entry", required_argument, NULL, 'e'},
'e', "ADDRESS", "Set start address", TWO_DASHES },
{ {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
'E', NULL, "Export all dynamic symbols", TWO_DASHES },
{ {"auxiliary", required_argument, NULL, 'f'},
'f', "SHLIB", "Auxiliary filter for shared object symbol table",
TWO_DASHES },
{ {"filter", required_argument, NULL, 'F'},
'F', "SHLIB", "Filter for shared object symbol table", TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'g', NULL, "Ignored", ONE_DASH },
{ {"gpsize", required_argument, NULL, 'G'},
'G', "SIZE", "Small data size (if no size, same as --shared)",
TWO_DASHES },
{ {"soname", required_argument, NULL, OPTION_SONAME},
'h', "FILENAME", "Set internal name of shared library", ONE_DASH },
{ {"library", required_argument, NULL, 'l'},
'l', "LIBNAME", "Search for library LIBNAME", TWO_DASHES },
{ {"library-path", required_argument, NULL, 'L'},
'L', "DIRECTORY", "Add DIRECTORY to library search path", TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'm', "EMULATION", "Set emulation", ONE_DASH },
{ {"print-map", no_argument, NULL, 'M'},
'M', NULL, "Print map file on standard output", TWO_DASHES },
{ {"nmagic", no_argument, NULL, 'n'},
'n', NULL, "Do not page align data", TWO_DASHES },
{ {"omagic", no_argument, NULL, 'N'},
'N', NULL, "Do not page align data, do not make text readonly",
TWO_DASHES },
{ {"output", required_argument, NULL, 'o'},
'o', "FILE", "Set output file name", TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'O', NULL, "Ignored", ONE_DASH },
{ {"relocateable", no_argument, NULL, 'r'},
'r', NULL, "Generate relocateable output", TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'i', NULL, NULL, ONE_DASH },
{ {"just-symbols", required_argument, NULL, 'R'},
'R', "FILE", "Just link symbols (if directory, same as --rpath)",
TWO_DASHES },
{ {"strip-all", no_argument, NULL, 's'},
's', NULL, "Strip all symbols", TWO_DASHES },
{ {"strip-debug", no_argument, NULL, 'S'},
'S', NULL, "Strip debugging symbols", TWO_DASHES },
{ {"trace", no_argument, NULL, 't'},
't', NULL, "Trace file opens", TWO_DASHES },
{ {"script", required_argument, NULL, 'T'},
'T', "FILE", "Read linker script", TWO_DASHES },
{ {"undefined", required_argument, NULL, 'u'},
'u', "SYMBOL", "Start with undefined reference to SYMBOL", TWO_DASHES },
{ {"version", no_argument, NULL, OPTION_VERSION},
'v', NULL, "Print version information", TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'V', NULL, "Print version and emulation information", ONE_DASH },
{ {"discard-all", no_argument, NULL, 'x'},
'x', NULL, "Discard all local symbols", TWO_DASHES },
{ {"discard-locals", no_argument, NULL, 'X'},
'X', NULL, "Discard temporary local symbols", TWO_DASHES },
{ {"trace-symbol", required_argument, NULL, 'y'},
'y', "SYMBOL", "Trace mentions of SYMBOL", TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'Y', "PATH", "Default search path for Solaris compatibility", ONE_DASH },
{ {NULL, required_argument, NULL, '\0'},
'z', "KEYWORD", "Ignored for Solaris compatibility", ONE_DASH },
{ {"start-group", no_argument, NULL, '('},
'(', NULL, "Start a group", TWO_DASHES },
{ {"end-group", no_argument, NULL, ')'},
')', NULL, "End a group", TWO_DASHES },
{ {"assert", required_argument, NULL, OPTION_ASSERT},
'\0', "KEYWORD", "Ignored for SunOS compatibility", ONE_DASH },
{ {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, "Link against shared libraries", ONE_DASH },
{ {"dy", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, "Do not link against shared libraries", ONE_DASH },
{ {"dn", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"static", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
'\0', NULL, "Bind global references locally", ONE_DASH },
{ {"cref", no_argument, NULL, OPTION_CREF},
'\0', NULL, "Output cross reference table", TWO_DASHES },
{ {"defsym", required_argument, NULL, OPTION_DEFSYM},
'\0', "SYMBOL=EXPRESSION", "Define a symbol", TWO_DASHES },
{ {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
'\0', "PROGRAM", "Set the dynamic linker to use", TWO_DASHES },
{ {"EB", no_argument, NULL, OPTION_EB},
'\0', NULL, "Link big-endian objects", ONE_DASH },
{ {"EL", no_argument, NULL, OPTION_EL},
'\0', NULL, "Link little-endian objects", ONE_DASH },
{ {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
'\0', NULL, "Generate embedded relocs", TWO_DASHES},
{ {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
'\0', NULL, "Force generation of file with .exe suffix", TWO_DASHES},
{ {"help", no_argument, NULL, OPTION_HELP},
'\0', NULL, "Print option help", TWO_DASHES },
{ {"Map", required_argument, NULL, OPTION_MAP},
'\0', "FILE", "Write a map file", ONE_DASH },
{ {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
'\0', NULL, "Use less memory and more disk I/O", TWO_DASHES },
{ {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
'\0', NULL, "Don't warn about mismatched input files", TWO_DASHES},
1997-09-24 19:39:15 +04:00
{ {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
'\0', NULL, "Turn off --whole-archive", TWO_DASHES },
{ {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
'\0', NULL, "Create an output file even if errors occur", TWO_DASHES },
{ {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
'\0', NULL, NULL, NO_HELP },
{ {"nostdlib", no_argument, NULL, OPTION_NO_STD_PATH}, /* NetBSD. */
'\0', NULL, "Do not use default library search path", ONE_DASH },
1997-09-24 19:39:15 +04:00
{ {"oformat", required_argument, NULL, OPTION_OFORMAT},
'\0', "TARGET", "Specify target of output file", TWO_DASHES },
{ {"qmagic", no_argument, NULL, OPTION_IGNORE},
'\0', NULL, "Ignored for Linux compatibility", ONE_DASH },
{ {"Qy", no_argument, NULL, OPTION_IGNORE},
'\0', NULL, "Ignored for SVR4 compatibility", ONE_DASH },
{ {"relax", no_argument, NULL, OPTION_RELAX},
'\0', NULL, "Relax branches on certain targets", TWO_DASHES },
{ {"retain-symbols-file", required_argument, NULL,
OPTION_RETAIN_SYMBOLS_FILE},
'\0', "FILE", "Keep only symbols listed in FILE", TWO_DASHES },
{ {"rpath", required_argument, NULL, OPTION_RPATH},
'\0', "PATH", "Set runtime shared library search path", ONE_DASH },
{ {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
'\0', "PATH", "Set link time shared library search path", ONE_DASH },
{ {"shared", no_argument, NULL, OPTION_SHARED},
'\0', NULL, "Create a shared library", ONE_DASH },
{ {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD, NetBSD. */
1997-09-24 19:39:15 +04:00
'\0', NULL, NULL, ONE_DASH },
{ {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
'\0', NULL, "Sort common symbols by size", TWO_DASHES },
{ {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
'\0', NULL, NULL, NO_HELP },
{ {"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE},
'\0', NULL, "Split output sections for each file", TWO_DASHES },
{ {"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC},
'\0', "COUNT", "Split output sections every COUNT relocs", TWO_DASHES },
{ {"stats", no_argument, NULL, OPTION_STATS},
'\0', NULL, "Print memory usage statistics", TWO_DASHES },
{ {"task-link", required_argument, NULL, OPTION_TASK_LINK},
'\0', "SYMBOL", "Do task level linking", TWO_DASHES },
1997-09-24 19:39:15 +04:00
{ {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
'\0', NULL, "Use same format as native linker", TWO_DASHES },
{ {"Tbss", required_argument, NULL, OPTION_TBSS},
'\0', "ADDRESS", "Set address of .bss section", ONE_DASH },
{ {"Tdata", required_argument, NULL, OPTION_TDATA},
'\0', "ADDRESS", "Set address of .data section", ONE_DASH },
{ {"Ttext", required_argument, NULL, OPTION_TTEXT},
'\0', "ADDRESS", "Set address of .text section", ONE_DASH },
{ {"Ur", no_argument, NULL, OPTION_UR},
'\0', NULL, "Build global constructor/destructor tables", ONE_DASH },
{ {"verbose", no_argument, NULL, OPTION_VERBOSE},
'\0', NULL, "Output lots of information during link", TWO_DASHES },
{ {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
'\0', NULL, NULL, NO_HELP },
{ {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
'\0', "FILE", "Read version information script", TWO_DASHES },
{ {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
'\0', NULL, "Warn about duplicate common symbols", TWO_DASHES },
{ {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
'\0', NULL, "Warn if global constructors/destructors are seen",
TWO_DASHES },
{ {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
'\0', NULL, "Warn if the multiple GP values are used", TWO_DASHES },
{ {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
'\0', NULL, "Warn only once per undefined symbol", TWO_DASHES },
{ {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
'\0', NULL, "Warn if start of section changes due to alignment",
TWO_DASHES },
{ {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
'\0', NULL, "Include all objects from following archives", TWO_DASHES },
{ {"Bforcearchive", no_argument, NULL, OPTION_WHOLE_ARCHIVE }, /* NetBSD. */
'\0', NULL, NULL, ONE_DASH },
1997-09-24 19:39:15 +04:00
{ {"wrap", required_argument, NULL, OPTION_WRAP},
'\0', "SYMBOL", "Use wrapper functions for SYMBOL", TWO_DASHES }
};
#define OPTION_COUNT ((int) (sizeof ld_options / sizeof ld_options[0]))
1997-09-24 19:39:15 +04:00
void
parse_args (argc, argv)
int argc;
char **argv;
{
int i, is, il;
int ingroup = 0;
char *default_dirlist = NULL;
char shortopts[OPTION_COUNT * 3 + 2];
struct option longopts[OPTION_COUNT + 1];
int last_optind;
1997-09-24 19:39:15 +04:00
/* Starting the short option string with '-' is for programs that
expect options and other ARGV-elements in any order and that care about
the ordering of the two. We describe each non-option ARGV-element
as if it were the argument of an option with character code 1. */
shortopts[0] = '-';
is = 1;
il = 0;
for (i = 0; i < OPTION_COUNT; i++)
{
if (ld_options[i].shortopt != '\0')
{
shortopts[is] = ld_options[i].shortopt;
++is;
if (ld_options[i].opt.has_arg == required_argument
|| ld_options[i].opt.has_arg == optional_argument)
{
shortopts[is] = ':';
++is;
if (ld_options[i].opt.has_arg == optional_argument)
{
shortopts[is] = ':';
++is;
}
}
}
if (ld_options[i].opt.name != NULL)
{
longopts[il] = ld_options[i].opt;
++il;
}
}
shortopts[is] = '\0';
longopts[il].name = NULL;
/* The -G option is ambiguous on different platforms. Sometimes it
specifies the largest data size to put into the small data
section. Sometimes it is equivalent to --shared. Unfortunately,
the first form takes an argument, while the second does not.
We need to permit the --shared form because on some platforms,
such as Solaris, gcc -shared will pass -G to the linker.
To permit either usage, we look through the argument list. If we
find -G not followed by a number, we change it into --shared.
This will work for most normal cases. */
for (i = 1; i < argc; i++)
if (strcmp (argv[i], "-G") == 0
&& (i + 1 >= argc
|| ! isdigit ((unsigned char) argv[i + 1][0])))
1997-09-24 19:39:15 +04:00
argv[i] = (char *) "--shared";
last_optind = -1;
1997-09-24 19:39:15 +04:00
while (1)
{
/* getopt_long_only is like getopt_long, but '-' as well as '--' can
indicate a long option. */
int longind;
int optc;
/* Using last_optind lets us avoid calling ldemul_parse_args
multiple times on a single option, which would lead to
confusion in the internal static variables maintained by
getopt. This could otherwise happen for an argument like
-nx, in which the -n is parsed as a single option, and we
loop around to pick up the -x. */
if (optind != last_optind)
{
if (ldemul_parse_args (argc, argv))
continue;
last_optind = optind;
}
1997-09-24 19:39:15 +04:00
optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
if (optc == -1)
break;
switch (optc)
{
default:
xexit (1);
case 1: /* File name. */
lang_add_input_file (optarg, lang_input_file_is_file_enum,
(char *) NULL);
break;
case OPTION_IGNORE:
break;
case 'a':
/* For HP/UX compatibility. Actually -a shared should mean
``use only shared libraries'' but, then, we don't
currently support shared libraries on HP/UX anyhow. */
if (strcmp (optarg, "archive") == 0)
config.dynamic_link = false;
else if (strcmp (optarg, "shared") == 0
|| strcmp (optarg, "default") == 0)
config.dynamic_link = true;
else
einfo ("%P%F: unrecognized -a option `%s'\n", optarg);
break;
case OPTION_ASSERT:
/* FIXME: We just ignore these, but we should handle them. */
if (strcmp (optarg, "definitions") == 0)
;
else if (strcmp (optarg, "nodefinitions") == 0)
;
else if (strcmp (optarg, "nosymbolic") == 0)
;
else if (strcmp (optarg, "pure-text") == 0)
;
else
einfo ("%P%F: unrecognized -assert option `%s'\n", optarg);
break;
case 'A':
ldfile_add_arch (optarg);
break;
case 'b':
lang_add_target (optarg);
break;
case 'c':
ldfile_open_command_file (optarg);
parser_input = input_mri_script;
yyparse ();
break;
case OPTION_CALL_SHARED:
config.dynamic_link = true;
break;
case OPTION_NON_SHARED:
config.dynamic_link = false;
break;
case OPTION_CREF:
command_line.cref = true;
link_info.notice_all = true;
break;
case 'd':
command_line.force_common_definition = true;
break;
case OPTION_DEFSYM:
lex_string = optarg;
lex_redirect (optarg);
parser_input = input_defsym;
parsing_defsym = 1;
yyparse ();
parsing_defsym = 0;
lex_string = NULL;
break;
case OPTION_DYNAMIC_LINKER:
command_line.interpreter = optarg;
break;
case OPTION_EB:
command_line.endian = ENDIAN_BIG;
break;
case OPTION_EL:
command_line.endian = ENDIAN_LITTLE;
break;
case OPTION_EMBEDDED_RELOCS:
command_line.embedded_relocs = true;
break;
case OPTION_EXPORT_DYNAMIC:
case 'E': /* HP/UX compatibility. */
command_line.export_dynamic = true;
break;
case 'e':
lang_add_entry (optarg, true);
break;
case 'f':
if (command_line.auxiliary_filters == NULL)
{
command_line.auxiliary_filters =
(char **) xmalloc (2 * sizeof (char *));
command_line.auxiliary_filters[0] = optarg;
command_line.auxiliary_filters[1] = NULL;
}
else
{
int c;
char **p;
c = 0;
for (p = command_line.auxiliary_filters; *p != NULL; p++)
++c;
command_line.auxiliary_filters =
(char **) xrealloc (command_line.auxiliary_filters,
(c + 2) * sizeof (char *));
command_line.auxiliary_filters[c] = optarg;
command_line.auxiliary_filters[c + 1] = NULL;
}
break;
case 'F':
command_line.filter_shlib = optarg;
break;
case OPTION_FORCE_EXE_SUFFIX:
command_line.force_exe_suffix = true;
break;
case 'G':
{
char *end;
g_switch_value = strtoul (optarg, &end, 0);
if (*end)
einfo ("%P%F: invalid number `%s'\n", optarg);
}
break;
case 'g':
/* Ignore. */
break;
case OPTION_HELP:
help ();
xexit (0);
break;
case 'L':
ldfile_add_library_path (optarg, true);
break;
case 'l':
lang_add_input_file (optarg, lang_input_file_is_l_enum,
(char *) NULL);
break;
case 'M':
config.map_filename = "-";
break;
case 'm':
/* Ignore. Was handled in a pre-parse. */
break;
case OPTION_MAP:
config.map_filename = optarg;
break;
case 'N':
config.text_read_only = false;
config.magic_demand_paged = false;
config.dynamic_link = false;
break;
case 'n':
config.magic_demand_paged = false;
config.dynamic_link = false;
break;
case OPTION_NO_KEEP_MEMORY:
link_info.keep_memory = false;
break;
case OPTION_NO_STD_PATH:
config.no_std_path = true;
break;
case OPTION_NO_WARN_MISMATCH:
command_line.warn_mismatch = false;
break;
1997-09-24 19:39:15 +04:00
case OPTION_NOINHIBIT_EXEC:
force_make_executable = true;
break;
case OPTION_NO_WHOLE_ARCHIVE:
whole_archive = false;
break;
case 'O':
/* FIXME "-O<non-digits> <value>" used to set the address of
section <non-digits>. Was this for compatibility with
something, or can we create a new option to do that
(with a syntax similar to -defsym)?
getopt can't handle two args to an option without kludges. */
break;
case 'o':
lang_add_output (optarg, 0);
break;
case OPTION_OFORMAT:
lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
break;
case 'i':
case 'r':
link_info.relocateable = true;
config.build_constructors = false;
config.magic_demand_paged = false;
config.text_read_only = false;
config.dynamic_link = false;
break;
case 'R':
/* The GNU linker traditionally uses -R to mean to include
only the symbols from a file. The Solaris linker uses -R
to set the path used by the runtime linker to find
libraries. This is the GNU linker -rpath argument. We
try to support both simultaneously by checking the file
named. If it is a directory, rather than a regular file,
we assume -rpath was meant. */
{
struct stat s;
if (stat (optarg, &s) >= 0
&& ! S_ISDIR (s.st_mode))
{
lang_add_input_file (optarg,
lang_input_file_is_symbols_only_enum,
(char *) NULL);
break;
}
}
/* Fall through. */
case OPTION_RPATH:
if (command_line.rpath == NULL)
command_line.rpath = buystring (optarg);
else
{
char *buf;
buf = xmalloc (strlen (command_line.rpath)
+ strlen (optarg)
+ 2);
sprintf (buf, "%s:%s", command_line.rpath, optarg);
free (command_line.rpath);
command_line.rpath = buf;
}
break;
case OPTION_RPATH_LINK:
if (command_line.rpath_link == NULL)
command_line.rpath_link = buystring (optarg);
else
{
char *buf;
buf = xmalloc (strlen (command_line.rpath_link)
+ strlen (optarg)
+ 2);
sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
free (command_line.rpath_link);
command_line.rpath_link = buf;
}
break;
case OPTION_RELAX:
command_line.relax = true;
break;
case OPTION_RETAIN_SYMBOLS_FILE:
add_keepsyms_file (optarg);
break;
case 'S':
link_info.strip = strip_debugger;
break;
case 's':
link_info.strip = strip_all;
break;
case OPTION_SHARED:
link_info.shared = true;
break;
case 'h': /* Used on Solaris. */
case OPTION_SONAME:
command_line.soname = optarg;
break;
case OPTION_SORT_COMMON:
config.sort_common = true;
break;
case OPTION_STATS:
config.stats = true;
break;
case OPTION_SYMBOLIC:
link_info.symbolic = true;
break;
case 't':
trace_files = true;
break;
case 'T':
ldfile_open_command_file (optarg);
parser_input = input_script;
yyparse ();
break;
case OPTION_TBSS:
set_section_start (".bss", optarg);
break;
case OPTION_TDATA:
set_section_start (".data", optarg);
break;
case OPTION_TTEXT:
set_section_start (".text", optarg);
break;
case OPTION_TRADITIONAL_FORMAT:
link_info.traditional_format = true;
break;
case OPTION_TASK_LINK:
link_info.task_link = true;
/* Fall through - do an implied -r option. */
1997-09-24 19:39:15 +04:00
case OPTION_UR:
link_info.relocateable = true;
config.build_constructors = true;
config.magic_demand_paged = false;
config.text_read_only = false;
config.dynamic_link = false;
break;
case 'u':
ldlang_add_undef (optarg);
break;
case OPTION_VERBOSE:
ldversion (1);
version_printed = true;
trace_file_tries = true;
break;
case 'v':
ldversion (0);
version_printed = true;
break;
case 'V':
ldversion (1);
version_printed = true;
break;
case OPTION_VERSION:
/* This output is intended to follow the GNU standards document. */
printf ("GNU ld %s\n", ld_program_version);
printf ("Copyright 1997 Free Software Foundation, Inc.\n");
printf ("\
This program is free software; you may redistribute it under the terms of\n\
the GNU General Public License. This program has absolutely no warranty.\n");
{
ld_emulation_xfer_type **ptr = ld_emulations;
printf (" Supported emulations:\n");
while (*ptr)
{
printf (" %s\n", (*ptr)->emulation_name);
ptr++;
}
}
xexit (0);
break;
case OPTION_VERSION_SCRIPT:
/* This option indicates a small script that only specifies
version information. Read it, but don't assume that
we've seen a linker script. */
{
boolean hold_had_script;
hold_had_script = had_script;
ldfile_open_command_file (optarg);
had_script = hold_had_script;
parser_input = input_version_script;
yyparse ();
}
break;
case OPTION_WARN_COMMON:
config.warn_common = true;
break;
case OPTION_WARN_CONSTRUCTORS:
config.warn_constructors = true;
break;
case OPTION_WARN_MULTIPLE_GP:
config.warn_multiple_gp = true;
break;
case OPTION_WARN_ONCE:
config.warn_once = true;
break;
case OPTION_WARN_SECTION_ALIGN:
config.warn_section_align = true;
break;
case OPTION_WHOLE_ARCHIVE:
whole_archive = true;
break;
case OPTION_WRAP:
add_wrap (optarg);
break;
case 'X':
link_info.discard = discard_l;
break;
case 'x':
link_info.discard = discard_all;
break;
case 'Y':
if (strncmp (optarg, "P,", 2) == 0)
optarg += 2;
default_dirlist = xstrdup (optarg);
break;
case 'y':
add_ysym (optarg);
break;
case 'z':
/* We accept and ignore this option for Solaris
compatibility. Actually, on Solaris, optarg is not
ignored. Someday we should handle it correctly. FIXME. */
break;
case OPTION_SPLIT_BY_RELOC:
config.split_by_reloc = atoi (optarg);
break;
case OPTION_SPLIT_BY_FILE:
config.split_by_file = true;
break;
case '(':
if (ingroup)
{
fprintf (stderr,
"%s: may not nest groups (--help for usage)\n",
program_name);
xexit (1);
}
lang_enter_group ();
ingroup = 1;
break;
case ')':
if (! ingroup)
{
fprintf (stderr,
"%s: group ended before it began (--help for usage)\n",
program_name);
xexit (1);
}
lang_leave_group ();
ingroup = 0;
break;
}
}
if (ingroup)
lang_leave_group ();
if (default_dirlist != NULL)
set_default_dirlist (default_dirlist);
}
/* Add the (colon-separated) elements of DIRLIST_PTR to the
library search path. */
static void
set_default_dirlist (dirlist_ptr)
char *dirlist_ptr;
{
char *p;
while (1)
{
p = strchr (dirlist_ptr, PATH_SEPARATOR);
1997-09-24 19:39:15 +04:00
if (p != NULL)
*p = '\0';
if (*dirlist_ptr != '\0')
ldfile_add_library_path (dirlist_ptr, true);
if (p == NULL)
break;
dirlist_ptr = p + 1;
}
}
static void
set_section_start (sect, valstr)
char *sect, *valstr;
{
char *end;
unsigned long val = strtoul (valstr, &end, 16);
if (*end)
einfo ("%P%F: invalid hex number `%s'\n", valstr);
lang_section_start (sect, exp_intop (val));
}
/* Print help messages for the options. */
static void
help ()
{
int i;
const char **targets, **pp;
printf ("Usage: %s [options] file...\n", program_name);
printf ("Options:\n");
for (i = 0; i < OPTION_COUNT; i++)
{
if (ld_options[i].doc != NULL)
{
boolean comma;
int len;
int j;
printf (" ");
comma = false;
len = 2;
j = i;
do
{
if (ld_options[j].shortopt != '\0'
&& ld_options[j].control != NO_HELP)
{
printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
len += (comma ? 2 : 0) + 2;
if (ld_options[j].arg != NULL)
{
if (ld_options[j].opt.has_arg != optional_argument)
{
printf (" ");
++len;
}
printf ("%s", ld_options[j].arg);
len += strlen (ld_options[j].arg);
}
comma = true;
}
++j;
}
while (j < OPTION_COUNT && ld_options[j].doc == NULL);
j = i;
do
{
if (ld_options[j].opt.name != NULL
&& ld_options[j].control != NO_HELP)
{
printf ("%s-%s%s",
comma ? ", " : "",
ld_options[j].control == TWO_DASHES ? "-" : "",
ld_options[j].opt.name);
len += ((comma ? 2 : 0)
+ 1
+ (ld_options[j].control == TWO_DASHES ? 1 : 0)
+ strlen (ld_options[j].opt.name));
if (ld_options[j].arg != NULL)
{
printf (" %s", ld_options[j].arg);
len += 1 + strlen (ld_options[j].arg);
}
comma = true;
}
++j;
}
while (j < OPTION_COUNT && ld_options[j].doc == NULL);
if (len >= 30)
{
printf ("\n");
len = 0;
}
for (; len < 30; len++)
putchar (' ');
printf ("%s\n", ld_options[i].doc);
}
}
printf ("%s: supported targets:", program_name);
targets = bfd_target_list ();
for (pp = targets; *pp != NULL; pp++)
printf (" %s", *pp);
free (targets);
printf ("\n");
printf ("%s: supported emulations: ", program_name);
ldemul_list_emulations (stdout);
printf ("\n");
printf ("\nReport bugs to bug-gnu-utils@gnu.org\n");
1997-09-24 19:39:15 +04:00
}